I just came across a mail sample with a User-Agent of "SOGoMail 2.3.23" which was not properly encoded to meet SMTP requirements. Specifically, it was encoded as a plain text mail with a line length longer than the 1000 byte (not counting trailing \r\n) limit defined for SMTP. The mail was to a public list, which was also misconfigured and otherwise resulted in the mail not getting delivered to many list subscribers, relevant headers are reproduced below (it seems the mail didn't make it to some list archives, otherwise I'd link to it).

Please cc me on any replies.


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From:   "Kyle James Chapman" <kyle.chap...@stud.uni-heidelberg.de>
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Date:   Mon, 11 Oct 2021 16:13:55 +0200
Subject: All Three Superblocks Damaged After Kernel Panic
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